DWC3 Ips can have more than 1 PHY for USB2 and 1 PHY for USB3, add support
for a generic number of PHYs and adapt the code to handle a generic
number of PHYs.
Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
---
drivers/usb/host/xhci-dwc3.c | 105 ++++++++++++++++++++++++-------------------
1 file changed, 58 insertions(+), 47 deletions(-)
diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
index 1022dd5..da29162 100644
--- a/drivers/usb/host/xhci-dwc3.c
+++ b/drivers/usb/host/xhci-dwc3.c
@@ -22,8 +22,8 @@
DECLARE_GLOBAL_DATA_PTR;
struct xhci_dwc3_platdata {
- struct phy usb_phy;
- struct phy usb3_phy;
+ struct phy *usb_phys;
+ int num_phys;
};
void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode)
@@ -113,45 +113,74 @@ void dwc3_set_fladj(struct dwc3 *dwc3_reg, u32 val)
}
#ifdef CONFIG_DM_USB
-static int xhci_dwc3_setup_phy(struct udevice *dev, int index, struct phy *phy)
+static int xhci_dwc3_setup_phy(struct udevice *dev, int count)
{
- int ret = 0;
+ struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
+ int i, ret;
+
+ if (!count)
+ return 0;
- ret = generic_phy_get_by_index(dev, index, phy);
- if (ret) {
- if (ret != -ENOENT) {
- pr_err("Failed to get USB PHY for %s\n", dev->name);
+ plat->usb_phys = devm_kcalloc(dev, count, sizeof(struct phy),
+ GFP_KERNEL);
+ if (!plat->usb_phys)
+ return -ENOMEM;
+
+ for (i = 0; i < count; i++) {
+ ret = generic_phy_get_by_index(dev, i, &plat->usb_phys[i]);
+ if (ret && ret != -ENOENT) {
+ pr_err("Failed to get USB PHY%d for %s\n",
+ i, dev->name);
return ret;
}
- } else {
- ret = generic_phy_init(phy);
+
+ ++plat->num_phys;
+ }
+
+ for (i = 0; i < plat->num_phys; i++) {
+ ret = generic_phy_init(&plat->usb_phys[i]);
if (ret) {
- pr_err("Can't init USB PHY for %s\n", dev->name);
- return ret;
+ pr_err("Can't init USB PHY%d for %s\n",
+ i, dev->name);
+ goto phys_err;
}
- ret = generic_phy_power_on(phy);
+ }
+
+ for (i = 0; i < plat->num_phys; i++) {
+ ret = generic_phy_power_on(&plat->usb_phys[i]);
if (ret) {
- pr_err("Can't power on USB PHY for %s\n", dev->name);
- generic_phy_exit(phy);
- return ret;
+ pr_err("Can't power USB PHY%d for %s\n",
+ i, dev->name);
+ goto phys_err;
}
}
return 0;
+
+phys_err:
+ for (; i >= 0; i--) {
+ generic_phy_power_off(&plat->usb_phys[i]);
+ generic_phy_exit(&plat->usb_phys[i]);
+ }
+
+ return ret;
}
-static int xhci_dwc3_shutdown_phy(struct phy *phy)
+static int xhci_dwc3_shutdown_phy(struct udevice *dev)
{
- int ret = 0;
+ struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
+ int i, ret;
- if (generic_phy_valid(phy)) {
- ret = generic_phy_power_off(phy);
- if (ret)
- return ret;
+ for (i = 0; i < plat->num_phys; i++) {
+ if (!generic_phy_valid(&plat->usb_phys[i]))
+ continue;
- ret = generic_phy_exit(phy);
- if (ret)
- return ret;
+ ret = generic_phy_power_off(&plat->usb_phys[i]);
+ ret |= generic_phy_exit(&plat->usb_phys[i]);
+ if (ret) {
+ pr_err("Can't shutdown USB PHY%d for %s\n",
+ i, dev->name);
+ }
}
return 0;
@@ -159,7 +188,6 @@ static int xhci_dwc3_shutdown_phy(struct phy *phy)
static int xhci_dwc3_probe(struct udevice *dev)
{
- struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
struct xhci_hcor *hcor;
struct xhci_hccr *hccr;
struct dwc3 *dwc3_reg;
@@ -170,18 +198,10 @@ static int xhci_dwc3_probe(struct udevice *dev)
hcor = (struct xhci_hcor *)((uintptr_t)hccr +
HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));
- ret = xhci_dwc3_setup_phy(dev, 0, &plat->usb_phy);
- if (ret) {
- pr_err("Failed to setup USB PHY for %s\n", dev->name);
- return ret;
- }
-
- ret = xhci_dwc3_setup_phy(dev, 1, &plat->usb3_phy);
- if (ret) {
- pr_err("Failed to setup USB3 PHY for %s\n", dev->name);
- xhci_dwc3_shutdown_phy(&plat->usb_phy);
+ ret = xhci_dwc3_setup_phy(dev, dev_count_phandle_with_args(
+ dev, "phys", "#phy-cells"));
+ if (ret)
return ret;
- }
dwc3_reg = (struct dwc3 *)((char *)(hccr) + DWC3_REG_OFFSET);
@@ -199,16 +219,7 @@ static int xhci_dwc3_probe(struct udevice *dev)
static int xhci_dwc3_remove(struct udevice *dev)
{
- struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
- int ret;
-
- ret = xhci_dwc3_shutdown_phy(&plat->usb_phy);
- if (ret)
- pr_err("Can't shutdown USB PHY for %s\n", dev->name);
-
- ret = xhci_dwc3_shutdown_phy(&plat->usb3_phy);
- if (ret)
- pr_err("Can't shutdown USB3 PHY for %s\n", dev->name);
+ xhci_dwc3_shutdown_phy(dev);
return xhci_deregister(dev);
}
--
2.7.4